Short-term wavelength changes in 1.5-/spl mu/m InGaAsP-InP distributed feedback semiconductor lasers |
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| Authors: | J. Jeong M.K. Song D.H. Jang K.H. Park |
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| Affiliation: | Dept. of Radio Eng., Korea Univ., Seoul, South Korea; |
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| Abstract: | We report short-term lasing wavelength changes in 1.5-/spl mu/m InGaAsP-InP distributed feedback (DFB) lasers. The lasing wavelengths after biasing the lasers have been changed upto 1.2 /spl Aring/ at 20/spl deg/C while maintaining the constant output power. It takes over 700-2000 s, to stabilize the lasing wavelengths in many lasers. The annealing effects could be partially responsible for the wavelength change. It certainly affects the initial performance of cold-start frequency-division-multiplexed systems. |
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